[MR2] Emissions problem

[Joel]

zach,

if i'm not mistaken, that boils down to unburnt fuel.  if it were NOx, 
that is caused by higher than normal cylinder temperature.

start off with the simplest things first.


spark plugs:
remove and inspect them.  if in doubt, replace them with factory Denso 
plugs.

spark plug wires:
inspect them at the same time that you are inspecting the spark plugs.  
if they look damaged, replace them with NGK or factory wires.

distributor cap and rotor:
remove the distributor cap and inspect it and the rotor.  if the rotor 
looks damaged or scorched, replace it with a factory part.  if the 
contacts inside the cap looked like they're worn or scorched, replace it 
with a factory part.

engine timing:
if you can, check the timing of the engine.  if you do not have the 
tool/knowledge, take it to a trusted mechanic and have them check the 
timing - it should be a very simple and inexpensive matter.


other than that, i am UNCERTAIN if the catalytic converter might be a 
realistic possibility...

the factory 5SFE engine is reliable, though no power house.  it should 
serve you very well for basic driving with no real problems.  but, like 
any engine, it does have its own 'quirks' and requires basic maintenance.

i'm sure that someone more versed than myself will chime in as well. :)

- joel -



Zach Boldbaatar wrote:
> Hi I just bought a 91 MR2. I had bunch of questions and I decided to go to those 
> who have and know mr2's. so here it is....
>
> I took my mr2 for emissions couple weeks ago...  it passed everything except 
> "HC" hyrdocarbons. the limit was 1.5 but my car had 4.91. what is the best way 
> to get this under control and hopefully pass emission? 
>
>
> it was in hail storm before i bought it so it has bunch of dents on it. I was 
> thinking about completely remodeling the outside. i dont know what  body kit i 
> should go for. if you know any good ones but cheap please let me know......
>
> Right now it has a four cylinder camry engine... what are your recommendations 
> for better one? 
>
>
> thanks
>
>
>       
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